WEBVTT 00:00:00.000 --> 00:00:02.859 Welcome to the deep dive. We are so glad you're 00:00:02.859 --> 00:00:04.900 joining us today. Yeah, really excited to get 00:00:04.900 --> 00:00:07.820 into this one. So If you are listening to this 00:00:07.820 --> 00:00:09.740 right now, chances are you've recently had to 00:00:09.740 --> 00:00:11.960 put together a piece of, you know, flat pack 00:00:11.960 --> 00:00:14.800 furniture. Exactly. Right. The cardboard box, 00:00:15.060 --> 00:00:17.140 you lay out all those identical wooden dowels, 00:00:17.160 --> 00:00:20.440 the confusing screws, and inevitably you're left 00:00:20.440 --> 00:00:23.140 staring at that tiny L -shaped Allen wrench. 00:00:23.379 --> 00:00:25.019 The one that always hurts your hand. Exactly. 00:00:25.199 --> 00:00:27.739 It's highly specialized. It really only does 00:00:27.739 --> 00:00:30.160 one thing. And without it, you are entirely stuck. 00:00:30.420 --> 00:00:32.659 Yeah. Modern technology is full of these highly 00:00:32.659 --> 00:00:35.420 specific tools. I mean, from specialized drill 00:00:35.420 --> 00:00:39.820 bits. to the exact charging cable for your specific 00:00:39.820 --> 00:00:42.659 smartphone. And it can feel like this overwhelming 00:00:42.659 --> 00:00:46.899 symptom of modern life. But today... we're taking 00:00:46.899 --> 00:00:50.079 a massive step back a huge step back we are diving 00:00:50.079 --> 00:00:52.259 into a collection of notes centered around a 00:00:52.259 --> 00:00:54.899 wikipedia excerpt and it's detailing a highly 00:00:54.899 --> 00:00:57.340 specialized prehistoric stone tool called the 00:00:57.340 --> 00:01:00.039 burin the burin yeah our mission today is to 00:01:00.039 --> 00:01:03.560 understand how a tiny seemingly simple piece 00:01:03.560 --> 00:01:06.859 of chipped stone actually represents a monumental 00:01:06.859 --> 00:01:10.040 leap in prehistoric engineering We're talking 00:01:10.040 --> 00:01:12.939 about the original hardware upgrade that quite 00:01:12.939 --> 00:01:14.879 literally changed the course of human history. 00:01:15.079 --> 00:01:17.439 It really did. So if you've ever felt overwhelmed 00:01:17.439 --> 00:01:20.560 by the sheer volume of modern tech, you're about 00:01:20.560 --> 00:01:23.859 to learn about the ancient multi -tool that started 00:01:23.859 --> 00:01:26.280 it all. Because looking at prehistoric tools 00:01:26.280 --> 00:01:28.219 through this lens of specialized technology, 00:01:28.620 --> 00:01:31.319 it completely shifts our understanding of early 00:01:31.319 --> 00:01:33.780 humanity. Right. The popular image is often just 00:01:33.780 --> 00:01:36.739 someone forcefully smashing two rocks together 00:01:36.739 --> 00:01:38.540 until one looks sharp enough to cut something. 00:01:38.959 --> 00:01:41.780 Classic caveman stereotype. Exactly. But the 00:01:41.780 --> 00:01:44.459 reality is far more deliberate. The burn isn't 00:01:44.459 --> 00:01:46.799 just a broken rock found on the ground. It is 00:01:46.799 --> 00:01:48.920 a piece of engineered technology that demonstrates 00:01:48.920 --> 00:01:52.840 intense foresight, planning, and a deep, intuitive 00:01:52.840 --> 00:01:55.180 grasp of material mechanics. Okay, let's unpack 00:01:55.180 --> 00:01:57.879 this. What exactly is a burn? At its most basic 00:01:57.879 --> 00:01:59.879 level, well, the name itself comes from the French 00:01:59.879 --> 00:02:02.859 word burin, which translates to cold chisel or 00:02:02.859 --> 00:02:05.060 a modern engraving tool. Cold chisel, okay. In 00:02:05.060 --> 00:02:08.139 the prehistoric context, a burin is a handheld 00:02:08.139 --> 00:02:11.780 lithic flake, basically a piece of stone that 00:02:11.780 --> 00:02:15.219 features a very specific chisel -like edge. Right. 00:02:15.699 --> 00:02:18.740 Early humans used this edge for carving or finishing 00:02:18.740 --> 00:02:21.819 wood, shaping bone tools, and even engraving. 00:02:22.189 --> 00:02:24.349 But how did they actually get that chisel shape? 00:02:24.449 --> 00:02:26.150 Because they weren't just picking up flat rocks 00:02:26.150 --> 00:02:28.810 and hoping for the best. No, not at all. The 00:02:28.810 --> 00:02:30.969 manufacturing process is central to why this 00:02:30.969 --> 00:02:33.969 tool was such a breakthrough. In archaeology, 00:02:33.969 --> 00:02:36.189 there's a field called lithic reduction. Lithic 00:02:36.189 --> 00:02:38.050 reduction. Yeah, which is essentially the science 00:02:38.050 --> 00:02:40.229 and study of how stones are fashioned into tools 00:02:40.229 --> 00:02:43.330 by removing pieces. Okay. And within that process, 00:02:43.610 --> 00:02:46.610 creating a burin involves producing something 00:02:46.610 --> 00:02:49.409 called a burin spall. Burin spall. That sounds 00:02:49.409 --> 00:02:52.300 incredibly technical. Walk us through what producing 00:02:52.300 --> 00:02:54.039 a burn spall actually looks like. Like if we 00:02:54.039 --> 00:02:56.060 were sitting around a Paleolithic campfire. Sure. 00:02:56.139 --> 00:02:58.879 So a burn spall is essentially debitage, which 00:02:58.879 --> 00:03:00.659 is the archaeological term for waste material. 00:03:00.879 --> 00:03:03.060 The trash. Exactly. The flakes that get discarded. 00:03:03.340 --> 00:03:06.159 To make a burn, the toolmaker takes a prepared 00:03:06.159 --> 00:03:09.219 flake of stone and deliberately strikes a small 00:03:09.219 --> 00:03:12.120 flake obliquely. Obliquely. Meaning they hit 00:03:12.120 --> 00:03:14.939 it at a very specific slant or angle right from 00:03:14.939 --> 00:03:17.139 the edge. They're carefully knocking off this 00:03:17.139 --> 00:03:20.340 long, narrow piece, which is the spall. So the 00:03:20.340 --> 00:03:22.400 spall is the piece that falls to the dirt, and 00:03:22.400 --> 00:03:24.400 the bran is the larger piece left in your hand, 00:03:24.460 --> 00:03:27.340 now featuring this newly exposed slanted edge. 00:03:27.580 --> 00:03:29.879 What's fascinating here is the intentionality 00:03:29.879 --> 00:03:33.039 behind that specific angle. Prehistoric humans 00:03:33.039 --> 00:03:35.560 understood a fundamental rule of physics. What 00:03:35.560 --> 00:03:38.620 is? If you want to slice soft material, like 00:03:38.620 --> 00:03:42.159 meat or hide, you need a thin, razor -sharp edge. 00:03:42.419 --> 00:03:44.900 Right, like a scalpel. Right. But if you take 00:03:44.900 --> 00:03:47.580 a thin edge... and try to carve into a dense, 00:03:47.620 --> 00:03:50.379 hard piece of reindeer bone or the branch of 00:03:50.379 --> 00:03:54.219 oak, that thin edge will instantly snap. It shatters. 00:03:54.360 --> 00:03:56.659 It shatters. You need structural integrity. By 00:03:56.659 --> 00:03:59.259 striking the stone obliquely to create that chisel 00:03:59.259 --> 00:04:02.020 -like burn edge, they engineered a tool thick 00:04:02.020 --> 00:04:04.240 enough to withstand the heavy, repetitive pressure 00:04:04.240 --> 00:04:07.180 of gouging and engraving. without shattering 00:04:07.180 --> 00:04:10.060 that is it's the exact same principle as a modern 00:04:10.060 --> 00:04:12.099 craftsman meticulously selecting a drill bit 00:04:12.099 --> 00:04:14.780 if you go into a workshop today you have wood 00:04:14.780 --> 00:04:17.800 bits you have masonry bits for concrete and metal 00:04:17.800 --> 00:04:20.519 bits yep they are all engineered with different 00:04:20.519 --> 00:04:23.279 angles and structural points to handle the specific 00:04:23.279 --> 00:04:25.480 resistance of the material they are cutting into 00:04:25.480 --> 00:04:28.699 early humans were basically engineering the prehistoric 00:04:28.699 --> 00:04:31.180 equivalent of a specialized masonry bit so they 00:04:31.180 --> 00:04:34.079 could work with incredibly tough organic materials 00:04:34.079 --> 00:04:36.470 and the sheer effectiveness of that specialized 00:04:36.470 --> 00:04:38.389 engineering is reflected in the archaeological 00:04:38.389 --> 00:04:42.509 record. The Burren became an essential, standardized 00:04:42.509 --> 00:04:45.589 piece of equipment for middle and upper Paleolithic 00:04:45.589 --> 00:04:49.069 cultures across Europe. Wow! And we see it across 00:04:49.069 --> 00:04:51.769 oceans as well, with archaeologists identifying 00:04:51.769 --> 00:04:53.949 them in North American cultural assemblages. 00:04:54.189 --> 00:04:55.990 And the geographic spread doesn't stop there. 00:04:56.170 --> 00:04:58.439 No, it doesn't. According to our notes, we have 00:04:58.439 --> 00:05:01.500 specific discoveries from Asia as well. Jia Lampo 00:05:01.500 --> 00:05:03.920 of Beijing University, in his book Early Man 00:05:03.920 --> 00:05:06.800 in China, documents the discovery of burns found 00:05:06.800 --> 00:05:09.100 among artifacts along the banks of the Ligon 00:05:09.100 --> 00:05:12.519 River near Zujiao. That's a huge finding. Yeah, 00:05:12.579 --> 00:05:14.639 the text mentions a few specific types found 00:05:14.639 --> 00:05:16.939 there, specifically dihedral burns and burns 00:05:16.939 --> 00:05:19.639 for truncation. Right. Before we talk about the 00:05:19.639 --> 00:05:22.319 locations, what do those two terms actually mean 00:05:22.319 --> 00:05:25.230 in plain English? So, dihedral simply means having 00:05:25.230 --> 00:05:28.389 two intersecting planes. Think of the roof of 00:05:28.389 --> 00:05:30.810 a house where the two slanted sides meet at a 00:05:30.810 --> 00:05:34.350 ridge. Okay, I can picture that. A dihedral burin 00:05:34.350 --> 00:05:37.470 is created by striking the stone so that two 00:05:37.470 --> 00:05:40.649 separate burin facets intersect. This creates 00:05:40.649 --> 00:05:43.449 a very strong, reinforced, pointed chisel edge 00:05:43.449 --> 00:05:46.290 at the tip. And what about the truncation? Truncation 00:05:46.290 --> 00:05:48.509 on the outhand just means cutting something short. 00:05:48.769 --> 00:05:52.290 A burin on a truncation is made by first abruptly 00:05:52.290 --> 00:05:55.569 snapping or flaking the end of the stone to create 00:05:55.569 --> 00:05:58.430 a flat, blunt surface. Okay. And then using that 00:05:58.430 --> 00:06:00.889 flat surface as a platform to strike off the 00:06:00.889 --> 00:06:03.569 burin's ball. It allows for a different angle 00:06:03.569 --> 00:06:05.910 and a completely different type of grip. So we 00:06:05.910 --> 00:06:08.329 have Europe. the sweeping landscapes of North 00:06:08.329 --> 00:06:11.529 America and the riverbanks of China, all utilizing 00:06:11.529 --> 00:06:14.709 these highly specific, mathematically precise 00:06:14.709 --> 00:06:17.529 manufacturing techniques. If we connect this 00:06:17.529 --> 00:06:19.709 to the bigger picture, the widespread geographic 00:06:19.709 --> 00:06:22.250 appearance of the Burren reveals something profound 00:06:22.250 --> 00:06:25.089 about human cognitive evolution. Yeah, because 00:06:25.089 --> 00:06:26.980 they weren't talking to each other. Exactly. 00:06:27.120 --> 00:06:29.300 You have prehistoric communities separated by 00:06:29.300 --> 00:06:32.339 thousands of miles, massive mountain ranges, 00:06:32.439 --> 00:06:35.040 entirely different ecosystems. They had absolutely 00:06:35.040 --> 00:06:38.120 no contact with one another. Yet they are encountering 00:06:38.120 --> 00:06:40.339 similar survival challenges, needing to work 00:06:40.339 --> 00:06:43.839 with bone, wood, and antler to survive. The fact 00:06:43.839 --> 00:06:46.079 that humans all over the globe independently 00:06:46.079 --> 00:06:50.000 engineered the exact same brilliant, mechanically 00:06:50.000 --> 00:06:53.360 sound solution shows a shared trajectory toward 00:06:53.360 --> 00:06:56.100 complex problem solving. So they have these incredibly 00:06:56.100 --> 00:06:59.279 durable chisel -like edges. What are they actually 00:06:59.279 --> 00:07:01.459 building with them? That is the big question. 00:07:01.579 --> 00:07:03.680 Here's where it gets really interesting. The 00:07:03.680 --> 00:07:05.540 burn is intimately associated with something 00:07:05.540 --> 00:07:08.420 called compound microblade projectile technology. 00:07:08.920 --> 00:07:11.180 It's quite a mouthful. It is. Let's break that 00:07:11.180 --> 00:07:12.839 dense terminology down for you listening because 00:07:12.839 --> 00:07:15.620 it represents a massive paradigm shift. To understand 00:07:15.620 --> 00:07:18.759 compound microblade projectile technology, we 00:07:18.759 --> 00:07:20.360 first have to look at the microblade itself. 00:07:21.300 --> 00:07:24.829 Picture a carefully prepared core of stone. A 00:07:24.829 --> 00:07:27.310 skilled napper could strike this core repeatedly 00:07:27.310 --> 00:07:30.610 to produce dozens of tiny, razor -sharp slivers 00:07:30.610 --> 00:07:34.079 of stone. These are microliths. We are not talking 00:07:34.079 --> 00:07:36.600 about heavy hand -sized spearheads here. We are 00:07:36.600 --> 00:07:39.459 talking about small, highly standardized parts. 00:07:39.740 --> 00:07:42.000 Like the individual razor blades you buy in a 00:07:42.000 --> 00:07:44.300 plastic cartridge at the pharmacy. That's a perfect 00:07:44.300 --> 00:07:47.360 comparison. But you can't hunt a mammoth by holding 00:07:47.360 --> 00:07:50.199 a single, tiny razor blade in your fingers. No, 00:07:50.399 --> 00:07:52.439 probably not a good idea. You need a delivery 00:07:52.439 --> 00:07:55.100 mechanism. That is where the burn becomes the 00:07:55.100 --> 00:07:58.160 most important tool in the kit. Burns were used 00:07:58.160 --> 00:08:01.160 as a rapid retouch and hafting preparation strategy. 00:08:01.279 --> 00:08:03.689 Hafting? Hafting is the process of attaching 00:08:03.689 --> 00:08:07.310 a stone point or blade to a handle, shaft, or 00:08:07.310 --> 00:08:09.850 in this case, an organic armature. And an organic 00:08:09.850 --> 00:08:12.069 armature would be something like a long, sturdy 00:08:12.069 --> 00:08:15.610 piece of bone, a carved piece of antler, or a 00:08:15.610 --> 00:08:18.329 hardened wooden shaft? Yes. So an early human 00:08:18.329 --> 00:08:20.790 could take their burin, press that sturdy chisel 00:08:20.790 --> 00:08:23.290 edge into the side of the bone or antler, and 00:08:23.290 --> 00:08:25.870 carve a deep, perfectly straight groove all the 00:08:25.870 --> 00:08:28.509 way down the side of it. Wow. Then they take 00:08:28.509 --> 00:08:31.189 those tiny interchangeable microliths and set 00:08:31.189 --> 00:08:33.509 them into that groove in a row, securing them 00:08:33.509 --> 00:08:36.169 tightly with plant resins or animal sinew. So 00:08:36.169 --> 00:08:38.730 wait, instead of a simple stick with one pointy 00:08:38.730 --> 00:08:41.830 rock tied to the end, they use the burin to manufacture 00:08:41.830 --> 00:08:45.169 a weapon featuring rows of razor -sharp stones 00:08:45.169 --> 00:08:47.970 embedded along its edges. That's exactly it. 00:08:48.049 --> 00:08:50.210 It's essentially a prehistoric chainsaw sword. 00:08:50.649 --> 00:08:54.250 Mechanically, that's incredibly accurate. And 00:08:54.250 --> 00:08:56.269 consider the strategic advantage of a weapon 00:08:56.269 --> 00:08:59.399 designed this way. If a traditional spear with 00:08:59.399 --> 00:09:02.360 a single stone tip hits a bone during a hunt 00:09:02.360 --> 00:09:05.620 and that tip shatters... The weapon is useless. 00:09:06.100 --> 00:09:08.700 Entirely useless. The hunter has to sit down, 00:09:08.820 --> 00:09:11.899 find a new rock, and nap an entirely new spearhead 00:09:11.899 --> 00:09:14.639 from scratch. Right. But with compound microblade 00:09:14.639 --> 00:09:17.580 technology, if one of your tiny microliths chips 00:09:17.580 --> 00:09:20.379 or falls out during a hunt, the weapon still 00:09:20.379 --> 00:09:22.320 functions perfectly well. Oh, that's brilliant. 00:09:22.580 --> 00:09:24.590 When the hunter returns to camp... They use their 00:09:24.590 --> 00:09:27.210 burin to do some rapid retouch, fixing the groove, 00:09:27.370 --> 00:09:30.009 and they simply pop a new interchangeable microblade 00:09:30.009 --> 00:09:32.990 right into the empty slot. I really want you, 00:09:33.149 --> 00:09:35.830 the listener, to pause and think about how monumental 00:09:35.830 --> 00:09:39.110 that shift is. The burin isn't just a knife used 00:09:39.110 --> 00:09:42.250 to cut food. It is manufacturing equipment used 00:09:42.250 --> 00:09:44.850 to build other, more complex tools and weapons. 00:09:45.090 --> 00:09:48.529 It is the tool used to make the tools. In the 00:09:48.529 --> 00:09:51.750 timeline of human technological evolution, this 00:09:51.750 --> 00:09:54.250 is the prehistoric equivalent of inventing a 00:09:54.250 --> 00:09:57.730 factory machine. Early humans moved past simply 00:09:57.730 --> 00:10:00.490 using an object to act on their environment directly. 00:10:00.929 --> 00:10:03.789 They started using an object to build a sophisticated, 00:10:04.190 --> 00:10:07.450 multi -part, modular system. And much like modern 00:10:07.450 --> 00:10:09.750 factory machines, the burin continued to evolve 00:10:09.750 --> 00:10:12.850 as human needs became more complex. There wasn't 00:10:12.850 --> 00:10:15.389 just one single burin design. Right. The notes 00:10:15.389 --> 00:10:17.779 mention several types. There were several distinct 00:10:17.779 --> 00:10:20.100 types, and these variations are actually used 00:10:20.100 --> 00:10:23.039 by modern archaeologists as diagnostic markers. 00:10:23.360 --> 00:10:25.679 Meaning, if an archaeologist is digging down 00:10:25.679 --> 00:10:27.820 through the layers of dirt, the archaeological 00:10:27.820 --> 00:10:30.940 stratums, and they find a specific model of Burren, 00:10:31.059 --> 00:10:33.740 they can immediately date that layer and identify 00:10:33.740 --> 00:10:35.960 the specific culture that occupied that site. 00:10:36.159 --> 00:10:38.299 Exactly. Let's dive into the typology, starting 00:10:38.299 --> 00:10:40.419 with a very famous variation from the source, 00:10:40.659 --> 00:10:43.840 the Noaiburren. The Noaiburren takes its name 00:10:43.840 --> 00:10:46.179 from the Grotte de Noailles, a cave site located... 00:10:46.220 --> 00:10:49.220 in the commune of Brie -la -Gaillard in the Cares 00:10:49.220 --> 00:10:51.559 department of southwestern France. This particular 00:10:51.559 --> 00:10:54.799 tool is characteristic of a specific upper Paleolithic 00:10:54.799 --> 00:10:58.559 cultural stage known as the Gravation. That places 00:10:58.559 --> 00:11:02.240 its use roughly between 28 ,000 and 23 ,000 B 00:11:02.240 --> 00:11:06.679 .C., or 29 ,000 to 22 ,000 before present. So 00:11:06.679 --> 00:11:08.840 we are looking at a highly refined piece of technology 00:11:08.840 --> 00:11:11.639 from an unimaginably long time ago. We really 00:11:11.639 --> 00:11:14.019 are. So what actually separates an oil burn from 00:11:14.019 --> 00:11:16.379 the basic chisel edge we talked about earlier? 00:11:16.679 --> 00:11:19.620 It is a small, multiple burn. The prehistoric 00:11:19.620 --> 00:11:22.039 toolmaker didn't just strike one spall to create 00:11:22.039 --> 00:11:24.100 a single working edge. They made more than one. 00:11:24.299 --> 00:11:27.200 Right. These specific flake tools were restruck 00:11:27.200 --> 00:11:29.519 and continually refined to give the user several 00:11:29.519 --> 00:11:31.919 distinct chisel -like edges on a single small 00:11:31.919 --> 00:11:34.639 piece of stone. But the most revealing detail 00:11:34.639 --> 00:11:36.980 about the Noaparin is that it was designed with 00:11:36.980 --> 00:11:39.879 a blunt, easily grippable rear edge. A blunt 00:11:39.879 --> 00:11:42.460 grip. The blunt, grippable rear edge is such 00:11:42.460 --> 00:11:45.000 a humanizing detail. It instantly tells you that 00:11:45.000 --> 00:11:47.580 whoever engineered this was thinking about ergonomics. 00:11:47.740 --> 00:11:50.659 If you are going to spend hours sitting by a 00:11:50.659 --> 00:11:54.019 fire, pressing a stone hard into a piece of dense 00:11:54.019 --> 00:11:57.019 reindeer antler to carve out a perfect groove 00:11:57.019 --> 00:11:59.759 for your microblades, you don't want the back 00:11:59.759 --> 00:12:02.080 of the stone digging into your own palm and causing 00:12:02.080 --> 00:12:04.840 blisters. No, you definitely don't. They engineered 00:12:04.840 --> 00:12:07.039 a comfortable safe handle right into the raw 00:12:07.039 --> 00:12:09.720 stone itself. It highlights a deep understanding 00:12:09.720 --> 00:12:12.679 of user experience, long before that concept 00:12:12.679 --> 00:12:15.740 had a name. Truly. Beyond the Noé, There are 00:12:15.740 --> 00:12:18.519 a few other key variations that make up the typology 00:12:18.519 --> 00:12:21.840 of these tools. There's the ordinary burin, which 00:12:21.840 --> 00:12:24.440 occurs when one burin facet is backed directly 00:12:24.440 --> 00:12:27.159 against another. So you have two distinct chisel 00:12:27.159 --> 00:12:29.759 edges reinforcing each other, likely providing 00:12:29.759 --> 00:12:32.620 even more structural durability for tougher materials. 00:12:32.840 --> 00:12:34.639 Precisely. And then we have the bec de flute, 00:12:34.840 --> 00:12:37.659 which translates from French to the mouthpiece 00:12:37.659 --> 00:12:40.220 of a flute. It's also known as an axial burin. 00:12:40.320 --> 00:12:42.840 How was that one made? A bec de flute begins 00:12:42.840 --> 00:12:46.139 as a long flake of stone. The toolmaker then 00:12:46.139 --> 00:12:49.320 knocks off one or both ends of that flake. This 00:12:49.320 --> 00:12:52.100 deliberate removal creates two working facets 00:12:52.100 --> 00:12:55.340 that meet at a very specific angle, visually 00:12:55.340 --> 00:12:57.940 resembling the slanted mouthpiece of a recorder 00:12:57.940 --> 00:13:00.480 or a flute. This raises an important question. 00:13:00.620 --> 00:13:03.279 Why did they invest the time to engineer all 00:13:03.279 --> 00:13:05.879 these different variations? We have the ordinary 00:13:05.879 --> 00:13:09.320 burin, the axial burin, the ergonomically designed 00:13:09.320 --> 00:13:13.590 noi burin, the dihedral burins from China. This 00:13:13.590 --> 00:13:15.809 raises an important question. Yeah. Yeah. It 00:13:15.809 --> 00:13:18.210 reveals that as prehistoric societies grew and 00:13:18.210 --> 00:13:20.850 specialized, their daily survival needs became 00:13:20.850 --> 00:13:23.330 hyper localized. Oh, that makes sense. A craftsman 00:13:23.330 --> 00:13:25.610 working with a specific type of regional reindeer 00:13:25.610 --> 00:13:28.210 antler in southwestern France during the Dravetian 00:13:28.210 --> 00:13:31.090 period faced entirely different mechanical requirements 00:13:31.090 --> 00:13:33.590 than a toolmaker carving different regional woods 00:13:33.590 --> 00:13:36.330 along the Liaguan River in China. Right. Different 00:13:36.330 --> 00:13:38.629 materials require different tools. Exactly. The 00:13:38.629 --> 00:13:40.649 subtle design differences in these Burren types 00:13:40.649 --> 00:13:43.070 give us a direct window into the highly specific, 00:13:43.250 --> 00:13:45.649 localized engineering problems these ancient 00:13:45.649 --> 00:13:48.690 people were solving on a daily basis. So what 00:13:48.690 --> 00:13:51.649 does this all mean? We started this deep dive 00:13:51.649 --> 00:13:54.590 looking at notes about a tiny, seemingly insignificant 00:13:54.590 --> 00:13:57.419 piece of chipped stone. But what we've actually 00:13:57.419 --> 00:14:00.220 uncovered is a master class in early human engineering. 00:14:00.399 --> 00:14:02.519 It really is. Whether we are looking at the Ice 00:14:02.519 --> 00:14:05.379 Age landscapes of Paleolithic Europe, the sweeping 00:14:05.379 --> 00:14:08.059 plains of North America, or the riverbanks of 00:14:08.059 --> 00:14:11.419 China. The burn represents a unified leap in 00:14:11.419 --> 00:14:14.120 our collective intelligence. A shared human trajectory. 00:14:14.500 --> 00:14:17.100 Exactly. It was a carefully struck, meticulously 00:14:17.100 --> 00:14:20.019 angled piece of technology that allowed our ancestors 00:14:20.019 --> 00:14:23.299 to move past simple, sharp rocks and enter the 00:14:23.299 --> 00:14:25.940 realm of compound machinery. It gave them the 00:14:25.940 --> 00:14:28.940 power to craft complex organic armatures, to 00:14:28.940 --> 00:14:31.480 build advanced hunting weapons with interchangeable 00:14:31.480 --> 00:14:34.179 parts, and to shape the very bones of the animals 00:14:34.179 --> 00:14:36.440 they hunted into the tools they needed to survive. 00:14:37.159 --> 00:14:39.679 It was undeniably the linchpin of Paleolithic 00:14:39.679 --> 00:14:42.080 industry. But there is one final detail from 00:14:42.080 --> 00:14:43.700 our notes that offers a completely different 00:14:43.700 --> 00:14:46.340 perspective on this tool. What's that? Early 00:14:46.340 --> 00:14:48.279 humans relied on the burin for carving wood and 00:14:48.279 --> 00:14:50.639 bone for survival, but they also used it for 00:14:50.639 --> 00:14:54.220 engraving images. Engraving images? Yes. The 00:14:54.220 --> 00:14:57.299 burin provided, for the very first time, a durable, 00:14:57.419 --> 00:15:00.720 precise, fine -point chisel capable of scratching 00:15:00.720 --> 00:15:03.279 deep, permanent, controlled lines into bone, 00:15:03.519 --> 00:15:06.519 antler, and cave walls. Not just a tool for building 00:15:06.519 --> 00:15:09.039 weapons, but a tool for creating art. Exactly. 00:15:09.259 --> 00:15:11.039 The question I want you to mull over as you go 00:15:11.039 --> 00:15:14.179 about your day is this. By giving early humans 00:15:14.179 --> 00:15:17.539 the exact mechanical engineering needed to effortlessly 00:15:17.539 --> 00:15:20.159 carve lines into resistant materials, did the 00:15:20.159 --> 00:15:22.059 invention of the Burren actually serve as the 00:15:22.059 --> 00:15:24.159 physical catalyst that allowed early humanity 00:15:24.159 --> 00:15:27.039 to invent two -dimensional art? Wow. Was this 00:15:27.039 --> 00:15:30.120 simple oblique strike of a stone the technological 00:15:30.120 --> 00:15:32.620 prerequisite that finally allowed our ancestors 00:15:32.620 --> 00:15:34.899 to begin recording their own history? From the 00:15:34.899 --> 00:15:37.820 prehistoric equivalent of a factory machine to 00:15:37.820 --> 00:15:40.000 the prehistoric equivalent of a pen. That is 00:15:40.000 --> 00:15:42.440 a brilliant thought to leave on. Thank you so 00:15:42.440 --> 00:15:44.139 much for joining us on this deep dive today. 00:15:44.340 --> 00:15:46.519 We hope this exploration has given you a whole 00:15:46.519 --> 00:15:48.700 new appreciation for the incredible ingenuity 00:15:48.700 --> 00:15:51.519 of our ancient ancestors and the hidden complexity 00:15:51.519 --> 00:15:54.759 behind the simplest tools. Keep looking closely 00:15:54.759 --> 00:15:56.860 at the world around you. Keep asking questions. 00:15:56.899 --> 00:16:00.240 And above all, keep that curiosity alive. We'll 00:16:00.240 --> 00:16:01.120 catch you next time.